Bosch Rexroth MKE Series - Output Shaft with Shaft Sealing Ring

(1) Key
(2) Keyway
(3) Motor shaft
(4) Centering hole
Fig.9-15: MKE output shaft with featherkey
The machine elements to be driven must additionally be secured in the axial
direction via the centering hole on the end face.
CAUTION
Shaft damage! In case of intense reversing operation, the seat of the
fitting spring may deflect. Increasing deformations in this area can then
lead to breakage of the shaft!
⇒ Preferably, plain output shafts should be used.
Balancing with a complete key
MKE motors are balanced with the complete featherkey. Hence, the machine
element to be driven must be balanced without a key.
Modifications to the keys may be made only by the user himself and on
his own responsibility. Bosch Rexroth does not provide any warranty for modi‐
fied key or motor shafts.
9.9.3 Output Shaft with Shaft Sealing Ring
MKE motors are designed with radial shaft sealing rings according to DIN 3760
– design A.
① Radial shaft sealing ring
Fig.9-16: MKE radial shaft sealing ring
Project Planning Manual | Rexroth MKE Synchronous Motors Electric Drives
and Controls
| Bosch Rexroth AG 85/131
Operating Conditions and Application Notes